#pragma warning disable CS1572 // Not all parameters will be used depending on feature flags
/// <summary>
/// Deserialize the SuggestResults.
/// </summary>
/// <param name="json">A JSON stream.</param>
/// <param name="serializer">
/// Optional serializer that can be used to customize the serialization
/// of strongly typed models.
/// </param>
/// <param name="async">Whether to execute sync or async.</param>
/// <param name="cancellationToken">
/// Optional <see cref="CancellationToken"/> to propagate notifications
/// that the operation should be canceled.
/// </param>
/// <returns>Deserialized SuggestResults.</returns>
internal static async Task <SuggestResults <T> > DeserializeAsync(
Stream json,
#if EXPERIMENTAL_SERIALIZER
ObjectSerializer serializer,
#endif
bool async,
CancellationToken cancellationToken)
#pragma warning restore CS1572
{
// Parse the JSON
using JsonDocument doc = async ?
await JsonDocument.ParseAsync(json, cancellationToken : cancellationToken).ConfigureAwait(false) :
JsonDocument.Parse(json);
JsonSerializerOptions defaultSerializerOptions = JsonSerialization.SerializerOptions;
SuggestResults <T> suggestions = new SuggestResults <T>();
foreach (JsonProperty prop in doc.RootElement.EnumerateObject())
{
if (prop.NameEquals(Constants.SearchCoverageKeyJson.EncodedUtf8Bytes) &&
prop.Value.ValueKind != JsonValueKind.Null)
{
suggestions.Coverage = prop.Value.GetDouble();
}
else if (prop.NameEquals(Constants.ValueKeyJson.EncodedUtf8Bytes))
{
List <SearchSuggestion <T> > results = new List <SearchSuggestion <T> >();
foreach (JsonElement element in prop.Value.EnumerateArray())
{
SearchSuggestion <T> suggestion = await SearchSuggestion <T> .DeserializeAsync(
element,
#if EXPERIMENTAL_SERIALIZER
serializer,
#endif
defaultSerializerOptions,
async,
cancellationToken)
.ConfigureAwait(false);
results.Add(suggestion);
}
suggestions.Results = new ReadOnlyCollection <SearchSuggestion <T> >(results);
}
}
return(suggestions);
}
/// <summary>
/// Parse the SuggestResults and its suggestions.
/// </summary>
/// <param name="reader">The JSON reader.</param>
/// <param name="typeToConvert">The type to parse into.</param>
/// <param name="options">Serialization options.</param>
/// <returns>The deserialized suggestions.</returns>
public override SuggestResults <T> Read(
ref Utf8JsonReader reader,
Type typeToConvert,
JsonSerializerOptions options)
{
Debug.Assert(typeToConvert != null);
Debug.Assert(typeToConvert.IsAssignableFrom(typeof(SuggestResults <T>)));
Debug.Assert(options != null);
SuggestResults <T> suggestions = new SuggestResults <T>();
reader.Expects(JsonTokenType.StartObject);
while (reader.Read() && reader.TokenType != JsonTokenType.EndObject)
{
switch (reader.ExpectsPropertyName())
{
case Constants.SearchCoverageKey:
suggestions.Coverage = reader.ExpectsNullableDouble();
break;
case Constants.ValueKey:
reader.Expects(JsonTokenType.StartArray);
while (reader.Read() && reader.TokenType != JsonTokenType.EndArray)
{
SearchSuggestion <T> suggestion =
_suggestionConverter.Read(ref reader, _suggestionType, options);
suggestions.Results.Add(suggestion);
}
break;
default:
// Ignore other properties (including OData context, etc.)
reader.Skip();
break;
}
}
return(suggestions);
}
/// <summary>
/// Serializing SuggestResults isn't supported as it's an output only
/// model type. This always fails.
/// </summary>
/// <param name="writer">The JSON writer.</param>
/// <param name="value">The suggestion.</param>
/// <param name="options">Serialization options.</param>
public override void Write(Utf8JsonWriter writer, SuggestResults <T> value, JsonSerializerOptions options) =>
throw new NotSupportedException($"{nameof(SuggestResults<T>)} cannot be serialized to JSON.");